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1·What's the estimated time of departure?

火车大概是什么时候离开？

2·I say again, UN001 mechanical problem, estimated time of departure (ETD) is delayed until 16:30.

我再说一遍，UN001因机械故障，预计起飞时间推迟到16：30。

3·UN001, Ramp Control, we have been advised that your estimated time of departure is delayed until 13:45 due to flow control.

现场，我们得到通知，因为流量控制，你的预计起飞时间推 迟到 13：45。